WO2020215287A1 - Procédé et appareil permettant de configurer des signaux de référence d'informations d'état de canal - Google Patents

Procédé et appareil permettant de configurer des signaux de référence d'informations d'état de canal Download PDF

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Publication number
WO2020215287A1
WO2020215287A1 PCT/CN2019/084371 CN2019084371W WO2020215287A1 WO 2020215287 A1 WO2020215287 A1 WO 2020215287A1 CN 2019084371 W CN2019084371 W CN 2019084371W WO 2020215287 A1 WO2020215287 A1 WO 2020215287A1
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WO
WIPO (PCT)
Prior art keywords
ues
csi
pilot
state information
channel state
Prior art date
Application number
PCT/CN2019/084371
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English (en)
Chinese (zh)
Inventor
钱颖
蔡睿
王轶
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP19925671.0A priority Critical patent/EP3952176A4/fr
Priority to PCT/CN2019/084371 priority patent/WO2020215287A1/fr
Priority to CN201980095655.2A priority patent/CN113748632B/zh
Publication of WO2020215287A1 publication Critical patent/WO2020215287A1/fr
Priority to US17/508,548 priority patent/US20220045821A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • This application relates to communication technology, and in particular, to a method and device for configuring channel state information reference signals.
  • beamforming can be used for multiple transmission modes (Transparent Mode, TM) to provide dedicated service beams for TM9 or TM10 user equipment (User Equipment, UE) at the same time.
  • TM Transparent Mode
  • UE User Equipment
  • the UE can be configured based on the base station.
  • the channel state information reference signal (Channel State Information-Reference Signal, CSI-RS) pilot measures the channel state information (Channel State Information, CSI) and feeds it back.
  • CSI-RS Channel State Information-Reference Signal
  • CSI-RS pilots are mapped to a fixed beam direction, and the beam direction is switched by switching the CSI-RS pilots when the UE moves.
  • the number of antennas increases, the number of beams in the cell will increase, and the number of CSI-RS pilots required will also increase, and the number of CSI-RS pilot configurations will increase, which will occupy more time-frequency resources. Affect the spectrum efficiency of the cell.
  • This application provides a method and device for configuring channel state information reference signals to reduce the impact of CSI-RS pilot configuration on the spectrum efficiency of a cell.
  • this application provides a method for configuring channel state information reference signals, including: acquiring the number of first user equipment UEs, where the UEs are UEs in the transmission mode TM9 or TM10; when the number of UEs is less than or equal to the set When the threshold is set, a channel state information reference signal CSI-RS pilot is configured for each UE.
  • the time-frequency resources occupied by the CSI-RS pilot can be reduced, thereby reducing the spectrum efficiency of the CSI-RS pilot configuration on the cell. Impact.
  • the method before configuring one CSI-RS pilot for each UE, the method further includes: configuring a period of the CSI-RS pilot according to the number of UEs.
  • the obtaining the number of UEs it further includes: when the number of UEs is greater than the set threshold, configuring a CSI-RS pilot for each beam in the cell.
  • the present application provides a communication device, including: an acquisition module, configured to acquire the number of first user equipment UEs, where the UE is a UE in the transmission mode TM9 or TM10; and a configuration module, configured to determine the number of UEs When it is less than or equal to the set threshold, configure a channel state information reference signal CSI-RS pilot for each UE.
  • an acquisition module configured to acquire the number of first user equipment UEs, where the UE is a UE in the transmission mode TM9 or TM10
  • a configuration module configured to determine the number of UEs When it is less than or equal to the set threshold, configure a channel state information reference signal CSI-RS pilot for each UE.
  • the configuration module is further configured to configure the period of the CSI-RS pilot according to the number of UEs.
  • the configuration module is further configured to configure a CSI-RS pilot for each beam in the cell when the number of UEs is greater than the set threshold.
  • this application provides a network device, including:
  • One or more processors are One or more processors;
  • Memory used to store one or more programs
  • the one or more processors When the one or more programs are executed by the one or more processors, the one or more processors implement the method according to any one of the foregoing first aspect.
  • the present application provides a computer-readable storage medium that stores instructions, and when the instructions are run on a computer, they are used to execute any one of the foregoing method.
  • the present application provides a computer program, when the computer program is executed by a computer, it is used to execute the method described in any one of the above-mentioned first aspects.
  • FIG. 1 is a flowchart of an embodiment of a method for configuring a channel state information reference signal according to this application;
  • FIG. 2 is a schematic block diagram of the communication device 200 provided by this application.
  • FIG. 3 is a schematic structural diagram of the network device 300 provided by this application.
  • At least one (item) refers to one or more, and “multiple” refers to two or more.
  • “And/or” is used to describe the association relationship of associated objects, indicating that there can be three types of relationships, for example, “A and/or B” can mean: only A, only B, and both A and B , Where A and B can be singular or plural.
  • the character “/” generally indicates that the associated objects are in an “or” relationship.
  • the following at least one item (a)” or similar expressions refers to any combination of these items, including any combination of a single item (a) or plural items (a).
  • At least one (a) of a, b or c can mean: a, b, c, "a and b", “a and c", “b and c", or "a and b and c" ", where a, b, and c can be single or multiple.
  • FIG. 1 is a flowchart of an embodiment of a method for configuring channel state information reference signals of this application. As shown in FIG. 1, the method in this embodiment may include:
  • Step 101 Obtain the number of UEs.
  • the UE is a UE using TM9 or TM10.
  • a network device for example, a base station in an MM
  • configures a downlink transmit beam for a UE it needs to refer to a TM9 or TM10 UE, so the number of such UEs must first be obtained.
  • Step 102 When the number of UEs is less than or equal to the set threshold, configure a channel state information reference signal CSI-RS pilot for each UE.
  • a subframe includes 14 symbols, and the number of CSI-RS pilots that can be configured is limited, and a maximum of 10 can be configured. Therefore, when the number of UEs is small, the network equipment can configure a CSI-RS pilot for each UE.
  • Frequency scheme when the UE moves, even if its corresponding downlink transmit beam is switched, the CSI-RS pilot used to measure CSI is fixed, that is, the beam direction of the CSI-RS pilot mapping varies with the position of the UE Variety.
  • the set threshold can be set according to the deployment of the cell, the network optimization effect, and the number of connected UEs. Illustratively, the set threshold is 6.
  • the network device configures one for each UE.
  • a total of 5 CSI-RS pilots are configured. This number is much smaller than the maximum configurable 10 CSI-RS pilots.
  • the time-frequency resources occupied by 5 CSI-RS pilots are greatly reduced. , Reducing the impact on the spectrum efficiency of the cell.
  • the network equipment can also adjust the CSI-RS pilot period according to the number of UEs, that is, the less the number of UEs, the shorter the CSI-RS pilot period, and the more UEs, the CSI-RS pilot
  • the frequency period can be longer.
  • the number of UEs is five.
  • the CSI-RS pilot cycle can be configured as short as 5ms.
  • the network device can configure CSI-RS pilots for these 5 UEs within the 5ms cycle, that is, set 5 Each UE is configured with CSI-RS pilots on one of the subframes in a 5ms period, or 5 UEs are configured with different CSI-RS pilots on the same or several subframes in a 5ms period, so as to facilitate The UE can transmit and feed back the CSI of the beam in its corresponding downlink.
  • the number of UEs is 60
  • the period of the CSI-RS pilot can be configured as 10ms
  • the network equipment can configure the CSI-RS pilots on multiple subframes within a 10ms period for these 60 UEs, so that each subframe
  • the time-frequency resources occupied by CSI-RS pilots are not many, and a large number of UEs are also supported.
  • the UEs that the network device can access will not use TM9 or TM10 and the UE that requests a larger amount of data to be transmitted is configured as TM9 or TM10, and then the CSI-RS pilot is configured for it using the above method.
  • the time-frequency resources occupied by the CSI-RS pilot can be reduced, thereby reducing the spectrum efficiency of the CSI-RS pilot configuration on the cell. Impact.
  • the network equipment can also configure a CSI-RS pilot for each beam in the cell. That is, if the number of UEs is large, configuring a CSI-RS pilot for each UE cannot meet the system requirements. For communication requirements, at this time, the network device can configure a CSI-RS pilot for each beam in the cell according to the prior art, which will not be repeated here.
  • FIG. 2 is a schematic block diagram of the communication device 200 provided by this application.
  • the communication device 200 includes an acquisition module 201 and a configuration module 202.
  • the communication device 200 has the function of configuring the CSI-RS pilot for the UE by the network device in the method embodiment.
  • the communication device 200 may completely correspond to the network device in the embodiment of FIG. 1.
  • the units of the communication device 200 are respectively used to perform the following operations and/or processing.
  • the obtaining module 201 is configured to obtain the number of first user equipment UEs, where the UEs are UEs in the transmission mode TM9 or TM10;
  • the configuration module 202 is configured to configure a channel state information reference signal CSI-RS pilot for each UE when the number of UEs is less than or equal to a set threshold.
  • the configuration module 202 is further configured to configure the period of the CSI-RS pilot according to the number of UEs.
  • the configuration module 202 is further configured to configure a CSI-RS pilot for each beam in the cell when the number of UEs is greater than the set threshold.
  • the communication device 200 may also have other functions in the method embodiment at the same time.
  • the acquisition module 201 and the configuration module 202 may be processors.
  • the acquisition module 201 and the configuration module 202 may be a processing device, and the functions of the processing device may be partially or fully implemented by software.
  • the functions of the processing device may be partially or fully implemented by software.
  • the processing device may include a memory and a processor.
  • the memory is used to store a computer program, and the processor reads and executes the computer program stored in the memory to execute the steps implemented inside the network device in each method embodiment.
  • the processing device includes a processor.
  • the memory for storing the computer program is located outside the processing device, and the processor is connected to the memory through a circuit/wire to read and execute the computer program stored in the memory.
  • the functions of the processing device may all be implemented by hardware.
  • the processing device may include an input interface circuit, a logic circuit, and an output interface circuit.
  • the communication device 200 may be a chip.
  • the present application also provides a computer-readable storage medium with a computer program stored on the computer-readable storage medium.
  • the computer program When the computer program is executed by a computer, the computer executes the steps executed by the network device in the above method embodiments and/ Or processing.
  • the computer program product includes computer program code.
  • the computer program code runs on a computer, the computer executes the steps and/or processing performed by the network device in the above method embodiments. .
  • the application also provides a chip including a processor.
  • the memory for storing the computer program is provided independently of the chip, and the processor is used to execute the computer program stored in the memory to execute the steps and/or processing executed by the network device in the method embodiment.
  • the chip may also include a memory and a communication interface.
  • the communication interface may be an input/output interface, a pin, an input/output circuit, or the like.
  • FIG. 3 is a schematic structural diagram of the network device 300 provided by this application.
  • the network device 300 may correspond to the satellite base station in each method embodiment.
  • the network equipment 300 includes an antenna 301, a radio frequency device 302, and a baseband device 303.
  • the antenna 301 is connected to the radio frequency device 302.
  • the radio frequency device 302 receives the signal from the terminal device through the antenna 301, and sends the received signal to the baseband device 303 for processing.
  • the baseband device 303 In the downlink direction, the baseband device 303 generates a signal that needs to be sent to the terminal device, and sends the generated signal to the radio frequency device 302.
  • the radio frequency device 302 transmits the signal through the antenna 301.
  • the baseband device 303 may include one or more processing units 3031.
  • the processing unit 3031 may specifically be a processor.
  • the baseband device 303 may further include one or more storage units 3032 and one or more communication interfaces 3033.
  • the storage unit 3032 is used to store computer programs and/or data.
  • the communication interface 3033 is used to exchange information with the radio frequency device 302.
  • the storage unit 3032 may specifically be a memory, and the communication interface 3033 may be an input/output interface or a transceiver circuit.
  • the storage unit 3032 may be a storage unit on the same chip as the processing unit 3031, that is, an on-chip storage unit, or a storage unit on a different chip from the processing unit 3031, that is, an off-chip storage unit. This application does not limit this.
  • the baseband device 303 may perform operations and/or processing performed by the acquisition module 201 and the configuration module 202 in the device embodiment (for example, FIG. 2).
  • the acquisition module 201 and the configuration module 202 of the communication device 200 shown in FIG. 2 may be the baseband device 303 shown in FIG. 3.
  • the processor mentioned in the above embodiments may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the processor can be a general-purpose processor, digital signal processor (digital signal processor, DSP), application-specific integrated circuit (ASIC), field programmable gate array (field programmable gate array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware encoding processor, or executed and completed by a combination of hardware and software modules in the encoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory mentioned in the above embodiments may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic RAM dynamic random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • serial link DRAM SLDRAM
  • direct rambus RAM direct rambus RAM
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (personal computer, server, or network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et un appareil de configuration de signaux de référence d'informations d'état de canal. Le procédé selon l'invention consiste : à acquérir le nombre d'équipements utilisateur (UE), l'UE étant un UE utilisant des modes de transmission TM9 ou TM10 ; et, lorsque le nombre d'UE est inférieur ou égal à un seuil prédéfini, à configurer une fréquence pilote de signaux de référence d'informations d'état de canal (CSI-RS) pour chaque UE. La présente invention peut réduire l'effet de la configuration de fréquence pilote de CSI-RS sur l'efficacité de spectre de fréquence de cellules.
PCT/CN2019/084371 2019-04-25 2019-04-25 Procédé et appareil permettant de configurer des signaux de référence d'informations d'état de canal WO2020215287A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP19925671.0A EP3952176A4 (fr) 2019-04-25 2019-04-25 Procédé et appareil permettant de configurer des signaux de référence d'informations d'état de canal
PCT/CN2019/084371 WO2020215287A1 (fr) 2019-04-25 2019-04-25 Procédé et appareil permettant de configurer des signaux de référence d'informations d'état de canal
CN201980095655.2A CN113748632B (zh) 2019-04-25 2019-04-25 信道状态信息参考信号的配置方法和装置
US17/508,548 US20220045821A1 (en) 2019-04-25 2021-10-22 Channel state information-reference signal configuration method and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/084371 WO2020215287A1 (fr) 2019-04-25 2019-04-25 Procédé et appareil permettant de configurer des signaux de référence d'informations d'état de canal

Related Child Applications (1)

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US17/508,548 Continuation US20220045821A1 (en) 2019-04-25 2021-10-22 Channel state information-reference signal configuration method and apparatus

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WO2020215287A1 true WO2020215287A1 (fr) 2020-10-29

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US (1) US20220045821A1 (fr)
EP (1) EP3952176A4 (fr)
CN (1) CN113748632B (fr)
WO (1) WO2020215287A1 (fr)

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EP3952176A4 (fr) 2022-05-04
CN113748632B (zh) 2023-05-05
EP3952176A1 (fr) 2022-02-09
CN113748632A (zh) 2021-12-03
US20220045821A1 (en) 2022-02-10

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